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Wastewater Treatment systems

Commercial Biofilter Treatment plants are a biological treatment unit, requiring the growth of aerobic bacteria i.e. bacteria that lives with oxygen, for this air is continuously blown into a Filter in the aeration chamber.

As can be observed with the system the primary chamber manhole has air vent cast into lid. This acts as air vent plus lifting slot. Desludging is carried out through this manhole only. Manhole lids should never be left off. This manhole should not be covered at any time.

Normal domestic usage of all sanitary waste can processed by these units:-toilets, showers, both dishwashers and garbage grinding, washing machines.

Normal use of detergents will not affect the bacteria within the system. However, in line with government recommendations the use of phosphates in washing powders should be. So look for the eco-label or check the contents of your washing powder and help the environment by cutting down on the use of phosphates. Do not allow rain water or surface water to enter the plant.

Do not allow large quantities of water softener regenerate:
• Oil or grease
• Photographic chemicals
• White spirits or paint
• Dyes

Do not allow disposal of non bio-degradable or bulk materials such as:
• Nappies
• Sanitary towels
• Similar products

To properly maintain your system remember the following: -

The primary chamber will eventually build up a high sludge level, and maintenance and desludging is required every 2 to 3 years.

Check that the vent is clear on desludging the manhole and also that the air vents under the box lid are clear.

Check if periods of very wet weather that surface water is not collecting in the area of the treatment plant if so this must be diverted away from both the plant and percolation area.

Maintenance will ensure proper function and long life span of all mechanical components.

Developing Sediment Traps for runoff

The purpose of a trap or basin is to provide an area where muddy runoff is allowed to pool, so sediment will settle out. Sediment traps and basins are installed in natural drainage areas before excavation or fill work begins. Do not depend on sediment traps and basins alone to control sediment loss from your construction site. Other uphill controls on bare areas, slopes, and in ditches and channels are needed to prevent overloading traps and basins. Containment for the pooling area can be an excavated hole or a dike made of earth or stone. Straw bales and silt fencing are not approved for use as containment structures for concentrated runoff flows.

Low-lying sites on the downhill side of bare soil areas where flows converge are ideal places to install temporary sediment traps and basins. In general, sediment traps are designed to treat run off from about 1 upto 5 acres. Sediment basins are larger, and serve larger areas of about 5 to 10 acres. Basins draining areas larger than 10 acres require an engineered design, and often function as permanent storm water treatment ponds after construction is complete.

Any depression, or low-lying place that receives muddy flows from exposed soil areas can serve as a sediment trap. Installing several small traps at strategic locations is often better than building one large basin. The simplest approach is to dig a hole or build a dike (berm) of earth or stone where concentrated flows are present. This will help to detain runoff so sediment can settle out. The outlet can be a rock lined depression in the containment berm.

Some design considerations must be allowed for. Do not put sediment traps or basins in or next to flowing streams or other waterways. Make sure pooled water does not flood buildings, roadways, or other structures.

full information on drainage systems?



everything about drainage systems example hw it works and y it is important and etc

advice on new soak away for cesspit please?



I’m putting in a new soak away pipe for my ces pit as the old one is blocked, i’m digging in about 25 metres of perforated pipe but need to know what is the best size of stone to put around the pipe to form the soak away? the pipe is 80mm and has small slots around it along it’s whole length.

How do I get rid of black gunk in my drains?



In all my drains in my house, there is this black slime nastiness accumulating on the inside. Is it mildew? I scrub the black off the inside of the drain plugs with a toothbrush and it comes up. Two weeks later when I go to clean it again, more black has ‘grown’ in. It also forms on the drain holes in my shower. My house is only 4 years old. Unfortunately, I cannot remove my drain plugs from my sink, at least I don’t know how.

Who is responsible for back flow sewage problem in my house?



My house had 2 back flow sewage problem in the past. 2 incidents happened within 1 month period. 1st incident: city service’s worker came out, sat in the car without bother looking or checking anything and he claimed on the rain. City hall didn’t take any responsibility. 2nd incident: city service’s 2 workers came down again, took a look and finally found a blockage in the hole. I also filed a claim, but the city hall still didn’t take any responsibility. In this case, who is responsible for the back flow sewage? This is evidently the city’s sewage line outside of the house. Should I sue the city hall? I’m in MA

how can i help my cesspit work better ?



its an old brick cess pit and we have had to have it emptied about once a month, we now think problem is amount of rain we have had filling it.

Blocked Drain?



The drain directly outside my house that the kitchen and bathroom go to is blocked, i have thrown bleach and drain unblocker down the drain i have also tried plunging. Last night i tried plunging again and i pulled out what looked liked linen and lots of tissue. Could my toilet pipe be linked to this pipe and that is causing the blockage? And what is the best way to unblock??
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What kind of plumbing / drainage will I need for a washing machine and seperate dryer?



I want to put my washer and dryer in the outside store - there’s mains water in there but it’s not tapped, there’s no sign of drainage either - any advice on what’s needed?

septic tank/cesspit for a static caravan?



I need a septic tank or cesspit for a static caravan but do not know where to look. The caravan is occupied by two adultsall the time. I do not mind if they are second hand