ENEXIO 2H Water Technologies uses its six-step process to tackle a customer’s wastewater treatment project
Our process from initial design to successful implementation:
- TEST & TRIAL (Pilot Plant)
- TREATMENT TARGETS & METHODOLOGY
- DESIGN, INSTALL, MONITOR.
When an end user has a new project for a problematic wastewater treatment process such as needing to meet new consents, increase capacity or reduce running costs ENEXIO 2H can help find the most suitable solution.
We as ENEXIO 2H can use our vast knowledge and experience in order to analyse the success of using a BIOdek Trickling Filter and with the existing analysis of the wastewater quality and composition can identify the best approach and design for treating the wastewater in order to solve the current issues.
In some cases though it may be necessary to carry out further testing in order to determine the treatability or to prove the initial analysis. For this we will Test and Trial (Pilot Plant) – in our Six Step Process.
This involves the creation of a scaled-down treatment plant with which we can identify and measure the precise levels of BOD, COD and other components in the wastewater/effluent.
We believe it’s important to test wastewater/effluent at a relatively early stage in the process, that is before we get down to the nuts and bolts of the proposed solution, because we – and the customer – need assurance that the wastewater/effluent will respond to biological treatment.
It would be a waste of everybody’s time and money if we designed, or, more importantly for the customer, sold, a biological treatment solution that wasn’t appropriate to the customer’s needs. That’s just the starting point. The pilot plant enables us to provide our customers, with verified proof that the solution we’ve recommended will deliver measurable results they need.
The Test & Trial Pilot Plant detailed in this article was created for a specialist chemicals manufacturer, when the company approached ENEXIO 2H Water Technologies for help with designing a suitable Effluent Treatment Plant (ETP). The current consent levels allowed the customer to discharge untreated wastewater which meant that there was little experience within the company about the treatability of the effluent but due to future changes to the consent discharging untreated effluent would no longer be possible.
In order to test the treatability and to help satisfy the customer’s concerns it was felt a pilot trial would be the best way forward to design and prove the effectiveness of our BIOdek media as a solution for thee needs.
The effluent had an average COD to BOD ratio of 2:1 which suggested good treatability but also included a cocktail of other contaminates requiring treatment. The pilot plant was designed to ascertain the effect these contaminates would have on the treatability of the effluent and how much the biological process would reduce these contaminates along with the levels of reduction of the COD and BOD.
DESIGN AND BUILD
The pilot plant comprised two BIOdek Trickling Filters in series, both of which were constructed in clear PVC vessels and fitted with our BIOdek polypropylene structured plastic media.
Each of the two filters included:
i. A Gravity settlement clarifier
ii. Internal recirculation line (variable speed peristaltic pump)
iii. One feed pump
iv. De-sludge pump
v. One feed vessel.
vi. One final effluent vessel
In addition to designing and building the pilot plant, we also provided full training and support for all employees involved in the daily operation and management of the pilot plant.
OPERATION, SAMPLING & ANALYSIS
After an initial seeding period, the pilot plant was in operation for several weeks, during which a series of tests and checks were conducted daily:
- Samples were taken daily from the Pilot Plant’s feed, after Filter 1, after Filter 2 and both de-sludge filters.
- All flow rates were measured and recorded
- Operation of pumps and pipework were checked for operation.
Also, during the trial samples were taken from the feed and both filters’ final effluent for external laboratory analysis.
Throughout the trial project, we continued to provide technical support, reviewing, assessing and giving informed comment on the results as they were generated.
On conclusion of the trial, we provided a detailed written report with a full analysis of the effluent plus an assessment of the potential value of biological treatment. We also ensured that the equipment was cleaned, dis-assembled and collected.
ENEXIO 2H were not only able to prove the effectiveness of using a BIOdek trickling filter to treat the effluent to the end user but also to use real-life data in order to design and cost the most efficient solution to achieve the required consent levels whilst also offering a low running/low maintenance solution. With the data the end user was also able to identify an additional process needed to remove certain contaminants from the wastewater which were previously overlooked.
The customer with our help is now in the process of finalising the design of the new effluent treatment plant (ETP) including a series of ENEXIO 2H BIOdek trickling filters before work commences to install the new ETP before the project deadline in order to meet the new consent levels and future proofing the running of their site.