Apparatus for preventing deterioration of concrete pipe

Apparatus adapted for cleansing away concrete deteriorating acid, introduced by any means including acid forming bacteria, from interior wall surfaces of a concrete sewer conduit normally unwashed by a flow of sewerage therethrough, said apparatus comprising:

• said concrete sewer conduit, and in a sewerage system, tubular means within and extending along a length of said concrete sewer conduit for conveying a cleansing fluid into said concrete sewer conduit, said tubular conveying means including a plurality of spraying means spaced apart along said length of said concrete sewer conduit for spraying said cleaning fluid onto said normally unwashed interior concrete sewer conduit wall surfaces, and means for disposing and leaving said tubular means with said plurality of spraying means within said concrete sewer conduit a sufficient period of time to enable a spraying operation which can be a continuous operation while said concrete sewer pipe is in use;
• whereby, when desired, said cleansing fluid may be sprayed from said plurality of spraying means, substantially simultaneously, onto said normally unwashed interior wall surfaces of said length of said concrete sewer conduit to prevent said concrete deteriorating acid, introduced by any means, and including acid forming bacteria, from building-up on said normally unwashed interior wall surfaces and to thereby consequently prolong the useful life of said concrete sewer conduit.