[Report 1940] / Medical Officer of Health, Pudsey Borough.

  • Pudsey (England). Borough Council.
Date:
1940
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1940] / Medical Officer of Health, Pudsey Borough. Source: Wellcome Collection.

    15/28 (page 13)
    SECTSOs^ C SANITARY CS RCUi\1STANCES OF THE AREA. SEWAGE DISPOSAL. I am indebted to Mr. Basil Noble, Boroug-h Surveyor, for the following report regarding Sewage Disposal in the borough. I. d'he sewage is dealt with in four portions:— (a) Houghside Sew^age AVorks serves approximately 13,000 people and consists of detritus tank, precipitation tanks, storm tank, ]3ercolating- filters, humus tanks and land treatment. Milk of lime is used as a precipitant and sludge is disposed of on dry¬ ing beds. (b) Smalewell Sewage Works serves approximately 4,000 people and consists of precipitation, storm waiter and humus tanks wdth filtration by percolating' and land filters. Sludge is disposed of on drying beds and aluminoferric is used as a precipitant. (cj Sewage from Parsley, 7,000 people, and (d) Calverley, 3,000 people, is treated at the Rodley Works the Leeds Corporation. Sewage Flow for 1940. Houghside. gallons. Total volume treated . 355,272,000 Average daily flow. 970,700 Average w^eek-day flow . 982,150 Average w^eek-day dry w^eather flow 813,000 Average Sunday dry weather flow 456,000 Rainfall (Houghside) 27.26 inches. Smalew'ell. gallons. 77)063,700 210,500 217,690 145,400 140,600' of Composition of Sewage. Mainlv domestic in origin and contains approximately 50% trade waste at Houghside Works, and 20% trade w^aste at Smalew'ell Works. Strength of Sewage. 'khe sewage at Houghside WMrks absorbs more than 16 parts per 100,000 of oxygen from acid KMn04 in four hours and is, there¬ fore, classed as very strong. At Smalewell WMrks the sewage is bordering on strong (O2 absorption = p/T00,000). Character of Sewage. The sewage at Houehside Works is a ^■er^' difficult one from a treatment point of view in so far as it is highly colloidal, a feature wdiich renders essential the use of precipitants, but which at the same time restricts the choice of precipitant which will achieve satisfactorv results. 1 he main trade wastes wdiich give the sewage this undesirable feature are discharges from woollen mills, tanneries, and grease works. The sew'age at Smalew^ell Works responds fairly readily to uormal treat¬ ment. Difficulty with irregular trade waste flushes is I'xpei'icnced. Proposed Improvements. The proposals outlined in the report of last year were examined at a Ministry of Health Inquiry in Februar)', 1939, and, but for the intervention of the w'ar, work upon them wmuld haie mnv been to progress.