Worksheet b: AQUEOUS EFFLUENTS

Company: Armond Engineering Ltd

Completed by: J Price

Date:20/07/99

 

1. Major type and sources of aqueous effluent

Description Source Quantity/year Disposal route Consent conditions
Spent paints and thinners, laboratory chemicals and washing solutions Pre-treatment, painting and testing 75 000 m3 Foul sewer from effluent treatment plant Discharge consent is attached

 

2. Does the site posses an effluent treatment plant?

yes no

Details of plant:

Plant installed in 1990 to handle 40m3 /hour.

Plans and description /specification of plant are attached

 

3. Are effluent monitored at point of discharge?

yes no

Details:

Local water company tests the discharges once every two weeks against the conditions of the discharge consent.

Maintenance staff monitor and make a record of pH each day.

 

4. Annual cost of operating the effluent treatment plant

Labour £6 000
Power and consumables £4 000
Maintenance (parts and labour) £3 500
Capital depreciation £8 000

 

5. Annual cost of effluent discharge to sewer and/or controlled waters

Details:

Effluent charges are £30 000 25 pence/m3

see water bill attached.