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sludge

Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems. For example, it can be produced as a settled suspension obtained from conventional drinking water treatment, as sewage sludge from wastewater treatment processes: 23–25  or as fecal sludge from pit latrines and septic tanks. The term is also sometimes used as a generic term for solids separated from suspension in a liquid; this 'soupy' material usually contains significant quantities of 'interstitial' water (between the solid particles). Sludge can consist of a variety of particles, such as animal manure.Industrial wastewater treatment plants produce solids that are also referred to as sludge. This can be generated from biological or physical-chemical processes.
In the activated sludge process for wastewater treatment, the terms "waste activated sludge" and "return activated sludge" are used.
In food processing and beverage-making industries, sludge can have high protein content and other nutrients that can be used for beneficial purposes such as animal feed, thereby avoiding disposal at a landfill.

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  1. P

    Sludge Removal And Using Rubber Mallet On Rads

    After a bit of advice about best way of cleaning my open vented system in bungalow. There are 8 rads, s plan, Ideal Concords WRS and all rad pipework is buried in screed with gate valve and pipe leading outside to drain system on same level as pipes in screed. When I was replacing a couple of...
  2. W

    Keston c36 no CH

    Hi Have keston c36 have had E11 error every few weeks but no major problems, now no CH water ok. Sometime water runs cold and rads heat up other times water is fine.. So does this mean pump or DV issue.. Had service few months ago and was told rads might have sludge as cold at bottom hot at top...
  3. K

    Heating problem

    System - 8 rads, all 10mm old HEP pipe, boiler around 30kw baxi 105 Job: investigate why 3 radiators an't working Engineers before me: 5 Got heating on, 3 of the problem rads flow valves getting hot, opposite side not. She said under her house is like a swimming pool and has to top pressure...
  4. B

    sludge

    h printing and showing to customers Vaillant Hot Water Problems? hot water problems explained and help and advice Or any other boiler for that matter!
  5. S

    Power flushing or Magnaclean filter system.

    Hi, I have oil fired central heating and have found that our radiators our not heating correctly i.e. hot at the top, cold at the bottom. I think this is caused by rust sludge gathering at the bottom of almost all the radiators. Question: what is the best way to clean away the sludge...
  6. C

    Cylinder Sludge

    Hi, My parents have a megaflow 125 unvented cylinder and when it came to replace the last bottom immersion heater (about 9 months ago) it was noted that there was a lot of sludge building up in the bottom. The same immersion heater has not gone again and needs replacing. Is it possible...
  7. A

    Magnacleanse

    Anyone used the Adey Magancleanse kit? Looks a decent bit of kit if it does what it says. Cant find a price online tho! Looks better than a bulky pain in the bum power flush machine imo
  8. B

    Sludge flush failure DIY resolution (or how to do the proper & cheap job yourself).

    So you just bought or moved into the house, switched on the heating, and only some radiators are completely hot, while others are lukewarm with coldspots in the middle, and the gas/oil bill was massive while most rooms are struggling to reach even 18C and pose a heath risk? The previous...
  9. A

    one radiator not working,

    can anybody help,i have one radiator that is hot in certain places of radiator,i have bleed radiator so it is not an air issue,thanks,ajoint
  10. M

    Sludge in Upstairs Radiator

    Hi All We have got a luke warm radiator in one of our upstairs bedrooms. I have tried bleeding it and also turning other radiators down and turning this one to max but it never gets really hot. I don't want to drain the system down so are there any other options for me? Thanks
  11. 8

    Radiator Valve replacement.what to do by a College teacher

    I was doing some write ups to finish my level 2,ive finished all exams just got to tidy a few bits and pieces off.Anyway Teacher comes in and says "you go to miss dopalopaloss house to change a leaking radiator valve in the living room ground floor." i said ok ,he then says "how would you deal...
  12. J

    getting sludge out of radiators

    Okay not too experienced with the heating systems , i did cover them in tech years ago so not totally thick , but the company i worked for didnt do heating it was plumbing only. While fixing a shower a customer asked why her rads are cold at the bottom . Sludge ?? Okay thats my thoughts anyway...
  13. A

    System noise

    Hello, My mum who has a fully pumped open vented y plan system and a glowworm 40ff boiler has been having trouble with some system noise. Basically when the hot water cylinder is being heated there seems to be what i can only describe as a squeaking noise which seems to be coming from the flow...
  14. JCplumb

    Wish me luck :)

    I'm off to replace a rad, sounds easy doesn't it? I went to this house 2 years ago to replace the CH pump, there were no gates so had to drain down. It took me 2 days to refill, All 10mm pipework from the 22mm flow and return and full of sludge... Customer didn't want a powerflush then and...
  15. A

    Sludge in brand new central heating system

    Can someone please help. We have had a new central heating system fitted including new combination boiler, new pipes and new radiators. WE are now finding black sludge is building up on the magnetron very quickly (after a week) and is damaging the heat exchanger. Nobody has any idea why and...
    • avril123
    • Thread
    • brand brand new central central heating heating heating system inhibitor problem sludge system
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  16. hammers4spanner

    sludge sysmptoms?

    issue with a old gravity system approx twenty years old ,owner complained about noisey pipes and heating /hot water not coming on .Gone out and their is a load clanging noise coming from pipework when switch on demand for either dhw/ch ,flow pipe gets hot but no heat on return and obviously...
  17. Deleted member 32524

    How to run boiler when doing a power flush

    I have done a power flush and the mis said to run boiler at around 50degrees. However, when i turned it on it banged and rattled and then shut down. Is this due to flow or what? Any ideas would help.
  18. S

    Boiler - Red water/Rust

    Hello All, I have a problem with my boiler (Heatline S24 Combi), and posted about it awhile ago. I now have some more specifics, and i'm hoping someone can ID the possible problem. The boiler has been cutting in and out, with the flame trying to relight, not producing enough heat for all...
  19. stani

    Sludge in condensate trap

    hi lads, went to a Worcester Greenstar HE. Z28 system boiler showing EA, client had disconnected the condensate pipe work but still kept failing, I removed the cond. trap and emptied out at least 1/2 inch of sludge, which was of the consistency of magnetite, when you scrape it off a...
  20. G

    Which cleanser / sludge remover?

    Just wondering which cleansers / sludge removers we all swear by? I know everyone will have a different opinion but just trying to gauge an overall view.
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