A new order for biological treatment of 600 m³/h paper pulp wastewater in Bulgaria

H+E, one of the leading international designers and suppliers of industrial process and wastewater treatment systems, has received an order for a new biological wastewater treatment plant from the Bulgarian viscose pulp producer Svilocell.
In order to meet the future EU-imposed discharge limits into the River Danube, the hitherto purely mechanical wastewater treatment plant will undergo a major expansion by adding biological treatment prior to discharge.
Svilocell ultimately decided to work with H+E due to the company’s many years of expertise, as evidenced by nearly 80 plants designed and built for the pulp and paper industry, and also the very positive experiences expressed by those long-term customers. In addition, the fact that H+E’s design allows the new process steps to integrate compactly into the existing plant layout, thereby utilising the available space, was a positive factor.
Before the mechanically cleaned wastewater is transferred to the new two-stage biological purification, it will first be cooled in an indirect cooling system to the temperature compatible with the biological process. The balanced combination of the BIOFIT®.H floating bed and the BIOFIT®.C aeration results in a cost-optimised solution.
In particular, the AEROFIT.V ventilation system contributes to the intrinsic value and energy efficiency of the new wastewater treatment system since it allows trouble-free operation over a period of decades with a consistently high oxygen yield.
Biochips with an especially high specific growth area are used as biofilm carriers.
The chosen process line will equip Svilocell with a highly robust and efficient wastewater treatment facility from 2018 onwards, in order to fully meet the requirements for environmental protection.
H+E also offers other process technologies for the pulp and paper industry, such as the cost-effective and energy-efficient mechanical treatment FLOCOMAT®.T and, for tertiary treatment, the BIOFIT®.Oxyd2 or FLOCOPAC® processes to reduce resistant COD.


Major Upgrade for Biological Wastewater Treatment Plant

H+E, together with its Russian affiliate OOO H+E Rus, has received the order for the modernisation of a biological wastewater treatment plant for Knauf Petroboard AG in Russia.

This modernisation of the wastewater treatment plant at “Knauf Petroboard AG” is necessary in order to improve the quality of treated wastewater and allow its discharge into fish waters. H+E has many years of experience in treating this type of waste. This, together with the presence of its subsidiary OOO “H+E Rus” and the proposed process concept for the renewal of the wastewater treatment plant all convinced the client to work with H+E. Another deciding factor was H+E’s ability to undertake the modernisation of the wastewater treatment plant to guarantee the strict limit values for purified wastewater to be discharged into a fish river at the same time as the client re-builds a board manufacturing machine.

As one of the first three steps of the modernisation measures, two new drum screens and two FLOCOMAT®.T clarifiers will be installed. In addition, the two existing pre-clarifiers will be converted into a combination of BIOFIT®.H high-load and BIOFIT®.SC low-load biological treatment stages, the ventilation station will be expanded, and the existing second-stage aeration tanks will be retrofitted with a new AEROFIT®.V ventilation system. Furthermore, a disinfection plant will be installed upstream of the purified sanitary water discharge into the river. Thus, the customer has opted for a compact solution that has been widely tested in the paper industry in the past.

The special feature of this process combination lies in the fourth modernisation step – a so-called tertiary cleaning stage. It consists of two lines of a BIOFIT®.HAC floating bed with powdered activated carbon dosing system and a FLOCOPAC® high-performance contact sludge inclined-plate clarifier, to be installed upstream of the UV disinfection. This stage makes it possible to achieve the required low discharge values. By integrating already existing components of the customer’s, the investment sum will also be reduced, which is a further advantage.

At present, design work is underway to implement the first stage, and the modernisation of treatment facilities will begin by the end of 2017.


Water & Wastewater Treatment for Printed Circuit Manufacturer

H+E has been a leading international supplier of industrial process and wastewater treatment systems for many years, with a long-standing reputation for both innovation and very high quality.

We believe that this, combined with the long-term technical support and service we provide to many of our past clients, is of great importance to our clients. After all, if your wastewater treatment plant does not work properly, you stand a real risk of having to stop production until the problem is solved!

Over the years, we have received a great many repeat orders from our clients, which we believe demonstrates quite clearly the relationship of both trust and respect that we have with them.

One of the most recent examples of this is a repeat order for the construction of a complete process water and wastewater treatment plant from a leading PCB manufacturer.

The overall plant comprises both an ion exchange deionisation facility and a treatment plant for wastewater of various types.

In addition to the trust that exists between the companies, H+E was able to clearly demonstrate a proven treatment concept that addresses the client’s current and future needs.

The very clear goal of this is to increase the flexibility, cost-effectiveness and availability of the plant. For example, the opportunities for resource recovery have been improved, in order to both reduce operating cost and, at the same time reduce the environmental impact of the plant.

If you have similar goals, we would be interested to hear what your aims are and how we can assist you to meet your targets.


Wastewater Treatment for the New Graphene Engineering & Innovation Centre

The pre-assembled and tested plant immediately before delivery to site

H+E has completed manufacture, pre-assembly, and has now delivered a plant to treat Wastewater arising from the new Graphene Engineering & Innovation Centre being built at the University of Manchester, where graphene was first isolated in 2004.

Graphene is amazing; dubbed the world’s first 2-D material, it is 200 times stronger than steel, yet incredibly thin and transparent, and the potential applications for its use are incredible. So, following more than a decade of research into the vast potential that this incredible material has to be used in our everyday lives, the new GEIC will provide ever better facilities to keep Manchester at the forefront of its development.

Wastewater collected from the R&D facilities will flow to a network of collection pipes and from there be transferred by pumping systems to the treatment plant.

Due to the potentially enormous variation in incoming quality, the wastewater will be collected and treated in batches three separate tanks.

Chemical dosing will be done automatically, as necessary before the wastewater is automatically checked for suitability to be discharged to foul sewer. Due to the possibility of various concentrations of a range of organic materials being present, the wastewater will be automatically sampled and analysed for organic content.

In recent years, H+E has dramatically increased the amount of pre-assembly and factory testing done for its plants. The prime reasons for this are to both improve the quality of equipment supplied and also minimise installation time on site. These continuously-uprated targets are totally in-line with H+E’s philosophy of Continuous Improvement.

We always try to keep in regular contact with all our clients and indeed we have some who we still visit regularly, and whose plants are well over 25 years old and working fine! But, even then, when we look back at the systems we supplied just a few years ago, we realise how much the quality of what we supply has improved and therefore how important our philosophy of Continuous Improvement is; it really works!

A high percentage of our overall business is from clients placing more orders with us so, although we know we are a long way from being perfect, we think it is reasonable to assume that we are doing a fairly good job and that our clients are satisfied!



Contract for complete wastewater treatment for sugar producer in Croatia

H+E, one of the leading providers of industrial process and wastewater treatment on the international market, has been awarded a contract for a complete wastewater treatment for a sugar producer in Croatia.

Having designed and built more than 40 treatment systems for sugar production worldwide, including plants in Lithuania, Egypt and Chile, H+E has a huge amount of experience with the rather unusual requirements of this type of wastewater.

The sugar industry uses flume water circuits for the cleaning of the delivered sugar beet. Many companies use the so-called alkaline mode of operation. This involves adding lime to the water, which reduces odour pollution, improves the settleability of the washed-off soil and reduces corrosion in the pipelines, thereby also minimising maintenance costs.

But using lime also results in wastewaters with high calcium content and a strong tendency to precipitate lime-containing solids. These precipitates lead to extensive operational problems in anaerobic wastewater treatment and to clogging of the membrane aerators in aerobic wastewater treatment, thus considerably reducing the capacity of the treatment plant.

But, H+E offers solutions to these problems that were specifically developed to deal with the issues resulting from the use of lime in sugar industry wastewater. These technological innovations include ANAFIT®.CS, one of the water treatment solutions from our ANAFIT® product range. Based on the anaerobic contact sludge process, ANAFIT®.CS is a reliable, proven and effective process for the treatment of the calcium-rich, organically highly loaded wastewaters from the sugar industry.

H+E also offers other process technologies for wastewater from the sugar industry: For example, the BIOFIT®.N treatment for nitrification/denitrification in an aerobic stage. Here, H+E’s specially developed aerators are used which, even at high calcium concentrations, reliably supply oxygen over years without requiring any maintenance.

In Croatia, industrial companies have faced stricter quality requirements in recent years following accession to the EU. Due to this, the client decided to invest in a new treatment plant including anaerobic and an aerobic stages. We arranged a visit to a nearby reference plant, which helped to convinced the customer of our experience and expertise.

The wastewater treatment plant will go into operation for the 2017/18 sugar campaign.

This project has recently been the subject of an article published in the International Sugar Journal. You can download that article here.